Malicious PDF — malware analysis report

Static analysis result for SHA-256 782d0d9764ecb549…

MALICIOUS

PDF

242.5 KB Created: 2012-09-09 22:11:26 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 2.5.000_PHP4 (http://www.tcpdf.org))
MD5: b8a2fd621860ba7950c87c860fd764b8 SHA-1: dd6a753941c6f3e5acfae66033e42effa68c4a37 SHA-256: 782d0d9764ecb5492b9ef16099496a386fc84a87ebbe7111a932cebbf9bdcf3e
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded JavaScript that creates hidden iframes and external links. These links, such as http://it.ph.affinity.com/ctrack0.php?..., are likely used to redirect the user to a malicious website or initiate a download. The presence of embedded script and hidden iframes strongly suggests an attempt to exploit the user's browser or trick them into clicking a malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9691

Heuristics 4

  • PDF contains hidden external HTML iframe high PDF_HIDDEN_HTML_IFRAME
    PDF bytes contain a hidden zero-size HTML iframe pointing to an external HTTP(S) URL. This is a strong malicious dropper/redirect indicator and is not expected in ordinary PDF content.
  • Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://www.gujaal.com/296/tamilnadu-election-results-2011-updates-tn-election-results-li
    • http://it.ph.affinity.com/ctrack0.php?&amp;cmpubid=xvj35&amp;cmskps=&amp;cmsite=www.gujaal.com&amp;cmchannelid=&amp;cmurl=http%3A%2F%2Fwww.gujaal.com%2F296%2Ftamilnadu-election-results-2011-updates-tn-election-results-live&amp;cmref=http%3A%2F%2Fsearch.yahoo.com%2Fsearch%3Fp%3Dtamilnadu%2Blive%2Bnews%2Baiadmk%26ei%3DUTF-8%26fr%3Dmoz35&amp;cmoe=yahoo&amp;cmoq=tamilnadu%20live%20news%20aiadmk&amp;cmvd=1600900-3301361&amp;cmvc=null&amp;cmtitle=Tamilnadu%20Election%20Results%202011%20%7C%20Updates%20TN%20Election%20Results%20Live%20%7C%20Gujaal%20News&amp;rnd=1305270576026&amp;q=result&amp;at=XS&amp;cmip=17&amp;cmis=149&amp;cmid=6&amp;cmdt=p
    • http://it.ph.affinity.com/ctrack0.php?&amp;cmpubid=xvj35&amp;cmskps=&amp;cmsite=www.gujaal.com&amp;cmchannelid=&amp;cmurl=http%3A%2F%2Fwww.gujaal.com%2F296%2Ftamilnadu-election-results-2011-updates-tn-election-results-live&amp;cmref=http%3A%2F%2Fsearch.yahoo.com%2Fsearch%3Fp%3Dtamilnadu%2Blive%2Bnews%2Baiadmk%26ei%3DUTF-8%26fr%3Dmoz35&amp;cmoe=yahoo&amp;cmoq=tamilnadu%20live%20news%20aiadmk&amp;cmvd=1600900-3301361&amp;cmvc=null&amp;cmtitle=Tamilnadu%20Election%20Results%202011%20%7C%20Updates%20TN%20Election%20Results%20Live%20%7C%20Gujaal%20News&amp;rnd=1305270576026&amp;q=government&amp;at=XS&amp;cmip=17&amp;cmis=149&amp;cmid=6&amp;cmdt=p
    • http://it.ph.affinity.com/ctrack0.php?&amp;cmpubid=xvj35&amp;cmskps=&amp;cmsite=www.gujaal.com&amp;cmchannelid=&amp;cmurl=http%3A%2F%2Fwww.gujaal.com%2F296%2Ftamilnadu-election-results-2011-updates-tn-election-results-live&amp;cmref=http%3A%2F%2Fsearch.yahoo.com%2Fsearch%3Fp%3Dtamilnadu%2Blive%2Bnews%2Baiadmk%26ei%3DUTF-8%26fr%3Dmoz35&amp;cmoe=yahoo&amp;cmoq=tamilnadu%20live%20news%20aiadmk&amp;cmvd=1600900-3301361&amp;cmvc=null&amp;cmtitle=Tamilnadu%20Election%20Results%202011%20%7C%20Updates%20TN%20Election%20Results%20Live%20%7C%20Gujaal%20News&amp;rnd=1305270576026&amp;q=bargain&amp;at=XS&amp;cmip=17&amp;cmis=149&amp;cmid=6&amp;cmdt=p
    • http://it.ph.affinity.com/ctrack0.php?&amp;cmpubid=xvj35&amp;cmskps=&amp;cmsite=www.gujaal.com&amp;cmchannelid=&amp;cmurl=http%3A%2F%2Fwww.gujaal.com%2F296%2Ftamilnadu-election-results-2011-updates-tn-election-results-live&amp;cmref=http%3A%2F%2Fsearch.yahoo.com%2Fsearch%3Fp%3Dtamilnadu%2Blive%2Bnews%2Baiadmk%26ei%3DUTF-8%26fr%3Dmoz35&amp;cmoe=yahoo&amp;cmoq=tamilnadu%20live%20news%20aiadmk&amp;cmvd=1600900-3301361&amp;cmvc=null&amp;cmtitle=Tamilnadu%20Election%20Results%202011%20%7C%20Updates%20TN%20Election%20Results%20Live%20%7C%20Gujaal%20News&amp;rnd=1305270576026&amp;q=data%20entry&amp;at=XS&amp;cmip=17&amp;cmis=149&amp;cmid=6&amp;cmdt=p
    • http://it.ph.affinity.com/ctrack0.php?&amp;cmpubid=xvj35&amp;cmskps=&amp;cmsite=www.gujaal.com&amp;cmchannelid=&amp;cmurl=http%3A%2F%2Fwww.gujaal.com%2F296%2Ftamilnadu-election-results-2011-updates-tn-election-results-live&amp;cmref=http%3A%2F%2Fsearch.yahoo.com%2Fsearch%3Fp%3Dtamilnadu%2Blive%2Bnews%2Baiadmk%26ei%3DUTF-8%26fr%3Dmoz35&amp;cmoe=yahoo&amp;cmoq=tamilnadu%20live%20news%20aiadmk&amp;cmvd=1600900-3301361&amp;cmvc=null&amp;cmtitle=Tamilnadu%20Election%20Results%202011%20%7C%20Updates%20TN%20Election%20Results%20Live%20%7C%20Gujaal%20News&amp;rnd=1305270576026&amp;q=home&amp;at=XS&amp;cmip=17&amp;cmis=149&amp;cmid=6&amp;cmdt=p
    • http://it.ph.affinity.com/ctrack0.php?&amp;cmpubid=xvj35&amp;cmskps=&amp;cmsite=www.gujaal.com&amp;cmchannelid=&amp;cmurl=http%3A%2F%2Fwww.gujaal.com%2F296%2Ftamilnadu-election-results-2011-updates-tn-election-results-live&amp;cmref=http%3A%2F%2Fsearch.yahoo.com%2Fsearch%3Fp%3Dtamilnadu%2Blive%2Bnews%2Baiadmk%26ei%3DUTF-8%26fr%3Dmoz35&amp;cmoe=yahoo&amp;cmoq=tamilnadu%20live%20news%20aiadmk&amp;cmvd=1600900-3301361&amp;cmvc=null&amp;cmtitle=Tamilnadu%20Election%20Results%202011%20%7C%20Updates%20TN%20Election%20Results%20Live%20%7C%20Gujaal%20News&amp;rnd=1305270576026&amp;q=candidate&amp;at=XS&amp;cmip=17&amp;cmis=149&amp;cmid=6&amp;cmdt=p
    • http://it.ph.affinity.com/ctrack0.php?&amp;cmpubid=xvj35&amp;cmskps=&amp;cmsite=www.gujaal.com&amp;cmchannelid=&amp;cmurl=http%3A%2F%2Fwww.gujaal.com%2F296%2Ftamilnadu-election-results-2011-updates-tn-election-results-live&amp;cmref=http%3A%2F%2Fsearch.yahoo.com%2Fsearch%3Fp%3Dtamilnadu%2Blive%2Bnews%2Baiadmk%26ei%3DUTF-8%26fr%3Dmoz35&amp;cmoe=yahoo&amp;cmoq=tamilnadu%20live%20news%20aiadmk&amp;cmvd=1600900-3301361&amp;cmvc=null&amp;cmtitle=Tamilnadu%20Election%20Results%202011%20%7C%20Updates%2
    • http://www.gnu.org/copyleft/gpl.html

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000d477.bin
a5337ef1f5a0dfe4dc8fa6b4f3ef847a53624800b5928a0eeef5b888ceecaabc		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xD477 264072 bytes
embedded_pdf_script_0003c637.bin
35e818170b611d56bb580b73ec8d5ce28c2a894b386531d2a4c68d5a532a48c5		 pdf-embedded-script PDF decompressed stream script payload at offset 0x3C637 248262 bytes

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